Window assembly with locking support



March 15, 1966 A. T. LUNDGREN WINDOW ASSEMBLY WITH LOCKING SUPPORT 2 Sheets-Sheet 1 Filed April 5, 1963 INVENTOR AGNE T. LUNDGREN 6Z%u%/e4/M ATTORNEYS March [5, I966 A. T. LUNDGREN 3,239,893

WINDOW ASSEMBLY WITH LOCKING SUPPORT Filed April 5, 1963 2 Sheets-Sheet 2 50 INVENTOR.

AGNE T. LUNDGREN WWW ATTORNEYS FIG. 8

1 emf FIG. 3

United States Patent 3,239,893 WINDOW ASSEMBLY WITH LOCKING SUPPQRT Agne T. Lundgren, Menlo Park, Calif., assignor to Western Sky Industries, Inc., Hayward, Califi, a corporation of California Filed Apr. 5, 1963, Ser. No. 270,877 2 Claims. (Cl. 2053) This invention relates to a window assembly with locking support and more particularly to locking support for windows of the type in which a sash is pivotally mounted within the window frame.

Pivoting sash windows are well known in the art and frequently, in such windows, means have been provided to retain or lock the sash in one or more open positions. Such means have, in the past, included worm gear cranks which also open and close the windows. Also bars attached to the opening sash have been used with means on the frame for locking the bar and thus the sash in a given position. Frequently the bar is disposed such that one end is pivotally secured to the window and the other is slidably disposed along a sill or jamb on the window frame. Various types of locking means have been provided to selectively retain the rod in a given position.

With the devices of the prior art, however, several difficulties have arisen. In substantially all cases where the window includes some means to lock or retain it in a selective position, that means causes difiiculty when'the window is to be cleaned. In some instances the means is permanently aflixed whereby the outside of the window must be cleaned from the outside of the building. In other instances the entire locking means is removed with substantial difiiculty and time consumption. Moreover, in the locking mechanisms of the prior art, the locking mechanism itself is necessarily exposed such that it not only detracts from the aesthetic appearance of the window but also is subjected to dust and/or weather. Moreover, locking means for those windows employing rods and the like, have been relatively inadequate in that they ordinarily operate only in a finite number of window opening positions.

In view of the above it is a general object of this invention to provide an improved locking support for windows.

It is a more particular object of this invention to provide a locking support for windows of the horizontally pivoted type which support may be simply detached from the window in order to simplify cleaning and the like.

It is another object of this invention to provide a locking support for windows of the above mentioned character wherein the locking support mechanism itself, when the window is closed, is hidden from view and protected from weather and dust.

It is another object of the invention to provide a locking support of the above mentioned character, mounted on a lower horizontal frame of the window, whereby the window may be locked at any of an infinite number of positions.

It is still a further object of the invention to provide a locking support of the above mentioned character in which the locking mechanism may be easily and removably mounted on a window frame and sash after assembly of the same.

These and other features and objects of the invention will become more clearly apparent upon a review of the following description in conjunction with the accompanying drawing, in which:

FIGURE 1 is a perspective view of a window of the pivotable type and incorporating the present invention;

FIGURE 2 is a top plan view showing a locking sup- Patented Mar. 15, 1966 port for windows in accordance with one embodiment of this invention;

FIGURE 3 is a sectional view taken along the line 2--2 of FIGURE 2;

FIGURE 4 is a front elevation of a guide block used in accordance with the invention;

FIGURE 5 is a side elevation of the block shown in FIGURE 4;

FIGURE 6 is a front elevation of a slide block used in accordance with the invention;

FIGURE 7 is a side elevation of the slide block shown in FIGURE 6;

FIGURE 8 is a sectional view taken along the line 77 of FIGURE 9 and showing the assembly of the guide block and slide block of FIGURES 4 to 7; and

FIGURE 9 is a front elevation of the assembled slide and guide blocks.

Referring to FIGURE 1, there is shown a window frame 11 in which is pivotably mounted a window sash 13. The sash is shown in solid lines in its open or ventilating position. A locking support, generally designated at 14 and more fully described hereinafter, serves to retain the sash in any open position limited only by the length of the locking support link. As will be seen hereinafter, the locking support is releasable from the sash whereby the sash may be pivoted in the direction of the arrow to an outside glass cleaning position, as shown in dashed lines. Thus, cleaning of both sides of the window sash is thereby simplified. If desired, a window lock 16 may be employed to lock the window in a completely closed position.

Referring to FIGURES 2, and 3, the window assembly including the window frame 11 and the window sash 13 is shown in more detail. The frame 11 includes an inner edge face 15 which, when the window is closed, lies in registry with an outer edge face 17 of the sash 13.

The window frame includes a horizontal channel member having upper and lower substantially parallel guides 19 and 21, respectively. Front and rear edge walls 23 maintain the guides in fixed spaced relationship. The upper guide 19 defines a slot 25 in which a guide block 27 is free to slide. Dimension of the guide block 27 is such that rotation within the slot 25 is prevented. A slide block 29 is disposed between the upper and lower guides 19 and 21. The slide block 29 is split thereby forming upper and lower portions.

The upper portion of the slide block 29 is threaded to receive a screw 31 having a handle or thumbgrip 33. The end of the screw 31 abuts the lower portion of the slide block 29 whereby, when screw 31 is tightened, the upper and lower portions are separated and are each urged against the respective guides 19 and 21 to prevent sliding movement along the frame.

The outer edge face 17 of the sash 13 includes a channel 37 which forms a slide for a pin 39. Pin 39 is connected to one end of a link 41, the other end of which is pivoted as at 43 to the inner face 15 of the window frame. A second link 45 has one end pivotally connected as at 47 to the link 41 while its other end is pivotally connected to the guide and slide blocks 27 and 29 by means of the screw 31.

It should be noted that, When the screw 31 is loosened, the guide and slide blocks 27 may be moved along the slot 25 such as to vary the opening of the sash 13 with respect to the frame 11. When the proper opening is reached, the screw 31 may be tightened whereby movement of the slide member 29 is prevented and the window is held open.

The channel 37 along the frame 13 includes shoulders 38 which are relieved as at 40 (FIGURE 2) whereby the pin 39 may be removed. With the pin 39 removed from the channel 37, the sash 13 is free to pivot completely within the frame whereby inner and outer panes of glass 40' and 42 (or the inner and outer sides of a single pane of glass) may alternatively be faced in the same direction for simplified cleaning.

Weather stripping means 47 and 49 are provided on the sash and frame, respectively. Also a flange 50 is secured to the frame 13 to facilitate mounting within a wall opening.

In tightening the screw 31 within the slide block 29 there would ordinarily be a tendency for the block 29 to turn with the screw. In order to prevent this turning and; at the same time, provide a slide block small enough to be placed within the channel by passage through the slot 25, the guide block 27 is utilized. The construction of these two blocks can best be seen in FIGURES 4 to 9 which show one embodiment of the individual blocks. Thus, FIGURES 4 and 5 illustrate a generally rectangular block of material 51 having a central opening 53 therein to freely receive the screw 31. Downwardly extending shoulders 55 are formed on the block 51 to provide a detent thereon for cooperation wit-h the slide block 29.

As seen in FIGURES 6 and 7 the slide block 29 includes a first or upper portion 57 and a second or lower portion 59 which are joined together at one end by a portion 61 which acts somewhat as a hinge. The upper portion 57 includes a central threaded opening 63 to receive the screw 31. It should be noted that there is no central opening provided in the lower portion 59. Thus as the screw is tightened within the opening 63 the portions 57 and 59 are spread apart.

Slide block 29 also includes recesses 65, the sides of which serve as detents. The recesses 65 are adapted to receive the shoulders 55 of the guide block to prevent relative rotation of the two blocks about their central openings 53 and 63. Thus when the two blocks are joined together as shown in FIGURES 2 and 3 and in more detail in FIGURES 8 and 9, relative rotation thereof is prevented. The slide block itself may be placed within the channel between the guide 19 and 21 by slipping it through the slot 25. After having been so inserted the guide block 27 is placed in the slot 25 and the shoulders 55 thereof placed within the recesses 65 of the slide block. The screw 31 may then be passed through the end of the link 45, and the guide block 27, and threaded into the upper portion of the slide block 29. Since the slide block 29 cannot rotate with respect to the guide block 27, and since the guide block cannot rotate within the slot 25, the slide block is restrained from rotation with the screw 31.

Thus it is seen that an improved locking support for windows is provided by which the edge face of the sash and frame are maintained in horizontal alignment during opening and closing of the window, with the sash protectively above the mechanism, whereas, when the window is closed, the entire mechanism is retained between the edge faces of the sash and frame, and thus protected from dust and weather. Moreover, it is apparent that the device is such that it may be easily separated from the window sash itself to provide free pivotal movement of the sash within the frame, to facilitate replacement or cleaning.

I claim:

1. A window assembly with locking support comprising a window frame, a lower horizontal side of said window frame including a pair of vertically spaced parallel guides, a window sash disposed within said window frame for pivotal movement about a horizontal axis, the lower horizontal side of the window sash defining a slot, a locking mechanism including a first link having one end pivotally mounted on said lower side of the frame, the other end of said first link being slidably disposed in the slot in said sash, a second link having one end pivotally connected to said first link, an expandable locking device disposed between said spaced parallel guides, the other end of said second link being pivotally connected to said locking device, said locking device including a first portion in sliding contact with one of said pair of guides and a second portion in sliding contact with the other of said pair of guides and means for selectively urging said first and second portions apart whereby sliding movement of the locking device may be selectively prevented.

2. A window assembly as defined in claim 1 wherein one of said spaced parallel guides defines a slot, said expandable locking device comprising a slide block and a guide block, said slide block including said first and second portions of the locking device and defining a detent, said first portion defining a through threaded opening in registry with said second portion, said guide block including a pair of parallel sides, and a second detent, the parallel sides of said guide block being disposed in said slot whereby rotation of the guide block is prevented, the detents on said slide block and guide block being disposed adjacent each other in cooperative relationship whereby rotation of the slide blocks is prevented, and a screw shaft threadably received by the first portion and having its end abutted against the second portion and serving to selectively urge the same apart.

References Cited by the Examiner UNITED STATES PATENTS 394,253 12/1888 Dill 292276 1,118,995 12/1914 Wright 292276 1,353,523 9/1920 Eustege 292-275 1,532,239 4/1925 Fauser 292-275 X 2,505,912 5/1950 Reynaud 268l06 2,784,459 4/ 1957 Anderberg et al 20-42 FOREIGN PATENTS 488,956 7/1938 Great Britain. 761,314 11/1956 Great Britain. 30,804 9/ 1933 Netherlands.

HARRISON R. MOSELEY, Primary Examiner.

M- HENS N WOOD, l -i E miner. 

1. A WINDOW ASSEMBLY WITH LOCKING SUPPORT COMPRISING A WINDOW FRAME, A LOWER HORIZONTAL SIDE OF SAID WINDOW FRAME INCLUDING A PAIR OF VERTICALLY SPACED PARLALLEL GUIDES, A WINDOW SASH DISPOSED WITHIN SAID WINDOW FRAME FOR PIVOTAL MOVEMENT ABOUT A HORIZONTAL AXIS, THE LOWER HORIZONTAL SIDE OF THE WINDOW SASH DEFINING A SLOT, A LOCKING MECHANISM INCLUDING A FIRST LINK HAVING ONE END PIVOTALLY MOUNTED ON SAID LOWER SIDE OF THE FRAME THE OTHER END OF SAID FIRST LINK BEING SLIDABLY DISPOSED IN THE SLOT IN SAID SASH, A SECOND LINK HAVING ONE END PIVOTALLY CONNECTED TO SAID FIRST LINK, AN EXPANDABLE LOCKING DEVICE DISPOSED BETWEEN SAID SPACED PARALLEL GUIDES, THE OTHER END OF SAID SECOND LINK BEING PIVOTALLY CONNECTED TO SAID LOCKING DEVICE, SAID LOCKING DEVICE INCLUDING A FIRST PORTION IN SLIDING CONTACT WITH ONE OF SAID PAIR OF GUIDES AND A SECOND PORTION IN SLIDING CONTACT WITH THE OTHER OF SAID PAIR OF GUIDES AND MEANS FOR SELECTIVELY URGING SAID FIRST AND SECOND PORTIONS APART WHEREBY SLIDING MOVEMENT OF THE LOCKING DEVICE MAY BE SELECTIVELY PREVENTED. 